Materials and Structures

, Volume 43, Issue 3, pp 429–439

Effects of polymer–cement ratio and accelerated curing on flexural behavior of hardener-free epoxy-modified mortar panels

Original Article

DOI: 10.1617/s11527-009-9578-8

Cite this article as:
Bhutta, M.A.R. Mater Struct (2010) 43: 429. doi:10.1617/s11527-009-9578-8

Abstract

This experimental study reports the applicability of hardener-free epoxy-modified mortar panels to permanent forms as precast concrete products. Hardener-free epoxy-modified mortars are mixed using a Bisphenoal A-type epoxy resin without any hardener with various polymer–cement ratios and steel fiber reinforcement, and subjected to different curings. Hardener-free epoxy-modified mortar panels are prepared with same polymer–cement ratios and steel fiber reinforcement on trial, and tested for flexural behavior under four-point (third-point) loading. The effects of polymer–cement ratios and curings on strength properties of hardener-free epoxy-modified mortars, and on the flexural strength, flexural stress-extreme tension fiber strain relation, flexural load–deflection relation of hardener-free epoxy-modified mortar panels were examined. The adhesion in tension (to placed concrete) of the hardener-free epoxy-modified mortar panels was also tested. As a result, the hardener-free epoxy-modified mortar panels develop a high flexural strength, large extensibility and good adhesion to the placed concrete. The epoxy-modified mortar panels are more ductile and have high load-bearing capacity than unmodified mortar panels and can be used as precast concrete permanent forms in practical applications.

Keywords

Epoxy resin Hardener-free epoxy modified mortar Permanent form Polymer–cement ratio Flexural behavior Adhesion 

Copyright information

© RILEM 2009

Authors and Affiliations

  1. 1.Department of Structures and Materials Faculty of Civil EngineeringUniversiti Teknologi MalaysiaSkudai, JohorMalaysia

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